LLVM 23.0.0git
MCObjectFileInfo.cpp
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1//===-- MCObjectFileInfo.cpp - Object File Information --------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/MC/MCObjectFileInfo.h"
10#include "llvm/ADT/StringExtras.h"
11#include "llvm/BinaryFormat/COFF.h"
12#include "llvm/BinaryFormat/ELF.h"
13#include "llvm/BinaryFormat/GOFF.h"
14#include "llvm/BinaryFormat/SFrame.h"
15#include "llvm/BinaryFormat/Wasm.h"
16#include "llvm/MC/MCAsmInfo.h"
17#include "llvm/MC/MCContext.h"
18#include "llvm/MC/MCGOFFAttributes.h"
19#include "llvm/MC/MCSection.h"
20#include "llvm/MC/MCSectionCOFF.h"
21#include "llvm/MC/MCSectionDXContainer.h"
22#include "llvm/MC/MCSectionELF.h"
23#include "llvm/MC/MCSectionGOFF.h"
24#include "llvm/MC/MCSectionMachO.h"
25#include "llvm/MC/MCSectionSPIRV.h"
26#include "llvm/MC/MCSectionWasm.h"
27#include "llvm/MC/MCSectionXCOFF.h"
28#include "llvm/MC/MCSymbolGOFF.h"
29#include "llvm/MC/SectionKind.h"
30#include "llvm/TargetParser/Triple.h"
31
32using namespace llvm;
33
34static bool useCompactUnwind(const Triple &T) {
35 // Only on darwin.
36 if (!T.isOSDarwin())
37 return false;
38
39 // aarch64 always has it.
40 if (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32)
41 return true;
42
43 // armv7k always has it.
44 if (T.isWatchABI())
45 return true;
46
47 // Use it on newer version of OS X.
48 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
49 return true;
50
51 // And the iOS simulator.
52 if (T.isiOS() && T.isX86())
53 return true;
54
55 // The rest of the simulators always have it.
56 if (T.isSimulatorEnvironment())
57 return true;
58
59 // XROS always has it.
60 if (T.isXROS())
61 return true;
62
63 return false;
64}
65
66void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) {
67 EHFrameSection = Ctx->getMachOSection(
68 "__TEXT", "__eh_frame",
69 MachO::S_COALESCED | MachO::S_ATTR_NO_TOC |
70 MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT,
71 SectionKind::getReadOnly());
72
73 if (T.isOSDarwin() &&
74 (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32 ||
75 T.isSimulatorEnvironment()))
76 SupportsCompactUnwindWithoutEHFrame = true;
77
78 switch (Ctx->emitDwarfUnwindInfo()) {
79 case EmitDwarfUnwindType::Always:
80 case EmitDwarfUnwindType::DwarfOnly:
81 OmitDwarfIfHaveCompactUnwind = false;
82 break;
83 case EmitDwarfUnwindType::NoCompactUnwind:
84 OmitDwarfIfHaveCompactUnwind = true;
85 break;
86 case EmitDwarfUnwindType::Default:
87 OmitDwarfIfHaveCompactUnwind =
88 T.isWatchABI() || SupportsCompactUnwindWithoutEHFrame;
89 break;
90 }
91
92 FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
93
94 TextSection // .text
95 = Ctx->getMachOSection("__TEXT", "__text",
96 MachO::S_ATTR_PURE_INSTRUCTIONS,
97 SectionKind::getText());
98 DataSection // .data
99 = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData());
100
101 // BSSSection might not be expected initialized on msvc.
102 BSSSection = nullptr;
103
104 TLSDataSection // .tdata
105 = Ctx->getMachOSection("__DATA", "__thread_data",
106 MachO::S_THREAD_LOCAL_REGULAR,
107 SectionKind::getData());
108 TLSBSSSection // .tbss
109 = Ctx->getMachOSection("__DATA", "__thread_bss",
110 MachO::S_THREAD_LOCAL_ZEROFILL,
111 SectionKind::getThreadBSS());
112
113 // TODO: Verify datarel below.
114 TLSTLVSection // .tlv
115 = Ctx->getMachOSection("__DATA", "__thread_vars",
116 MachO::S_THREAD_LOCAL_VARIABLES,
117 SectionKind::getData());
118
119 TLSThreadInitSection = Ctx->getMachOSection(
120 "__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
121 SectionKind::getData());
122
123 CStringSection // .cstring
124 = Ctx->getMachOSection("__TEXT", "__cstring",
125 MachO::S_CSTRING_LITERALS,
126 SectionKind::getMergeable1ByteCString());
127 UStringSection
128 = Ctx->getMachOSection("__TEXT","__ustring", 0,
129 SectionKind::getMergeable2ByteCString());
130 FourByteConstantSection // .literal4
131 = Ctx->getMachOSection("__TEXT", "__literal4",
132 MachO::S_4BYTE_LITERALS,
133 SectionKind::getMergeableConst4());
134 EightByteConstantSection // .literal8
135 = Ctx->getMachOSection("__TEXT", "__literal8",
136 MachO::S_8BYTE_LITERALS,
137 SectionKind::getMergeableConst8());
138
139 SixteenByteConstantSection // .literal16
140 = Ctx->getMachOSection("__TEXT", "__literal16",
141 MachO::S_16BYTE_LITERALS,
142 SectionKind::getMergeableConst16());
143
144 ReadOnlySection // .const
145 = Ctx->getMachOSection("__TEXT", "__const", 0,
146 SectionKind::getReadOnly());
147
148 // If the target is not powerpc, map the coal sections to the non-coal
149 // sections.
150 //
151 // "__TEXT/__textcoal_nt" => section "__TEXT/__text"
152 // "__TEXT/__const_coal" => section "__TEXT/__const"
153 // "__DATA/__datacoal_nt" => section "__DATA/__data"
154 Triple::ArchType ArchTy = T.getArch();
155
156 ConstDataSection // .const_data
157 = Ctx->getMachOSection("__DATA", "__const", 0,
158 SectionKind::getReadOnlyWithRel());
159
160 if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) {
161 TextCoalSection
162 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
163 MachO::S_COALESCED |
164 MachO::S_ATTR_PURE_INSTRUCTIONS,
165 SectionKind::getText());
166 ConstTextCoalSection
167 = Ctx->getMachOSection("__TEXT", "__const_coal",
168 MachO::S_COALESCED,
169 SectionKind::getReadOnly());
170 DataCoalSection = Ctx->getMachOSection(
171 "__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData());
172 ConstDataCoalSection = DataCoalSection;
173 } else {
174 TextCoalSection = TextSection;
175 ConstTextCoalSection = ReadOnlySection;
176 DataCoalSection = DataSection;
177 ConstDataCoalSection = ConstDataSection;
178 }
179
180 DataCommonSection
181 = Ctx->getMachOSection("__DATA","__common",
182 MachO::S_ZEROFILL,
183 SectionKind::getBSS());
184 DataBSSSection
185 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
186 SectionKind::getBSS());
187
188
189 LazySymbolPointerSection
190 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
191 MachO::S_LAZY_SYMBOL_POINTERS,
192 SectionKind::getMetadata());
193 NonLazySymbolPointerSection
194 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
195 MachO::S_NON_LAZY_SYMBOL_POINTERS,
196 SectionKind::getMetadata());
197
198 ThreadLocalPointerSection
199 = Ctx->getMachOSection("__DATA", "__thread_ptr",
200 MachO::S_THREAD_LOCAL_VARIABLE_POINTERS,
201 SectionKind::getMetadata());
202
203 AddrSigSection = Ctx->getMachOSection("__DATA", "__llvm_addrsig", 0,
204 SectionKind::getData());
205
206 // Exception Handling.
207 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
208 SectionKind::getReadOnlyWithRel());
209
210 COFFDebugSymbolsSection = nullptr;
211 COFFDebugTypesSection = nullptr;
212 COFFGlobalTypeHashesSection = nullptr;
213
214 if (useCompactUnwind(T)) {
215 CompactUnwindSection =
216 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
217 SectionKind::getReadOnly());
218
219 if (T.isX86())
220 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
221 else if (T.getArch() == Triple::aarch64 || T.getArch() == Triple::aarch64_32)
222 CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
223 else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
224 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
225 }
226
227 // Debug Information.
228 DwarfDebugNamesSection =
229 Ctx->getMachOSection("__DWARF", "__debug_names", MachO::S_ATTR_DEBUG,
230 SectionKind::getMetadata(), "debug_names_begin");
231 DwarfAccelNamesSection =
232 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
233 SectionKind::getMetadata(), "names_begin");
234 DwarfAccelObjCSection =
235 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
236 SectionKind::getMetadata(), "objc_begin");
237 // 16 character section limit...
238 DwarfAccelNamespaceSection =
239 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
240 SectionKind::getMetadata(), "namespac_begin");
241 DwarfAccelTypesSection =
242 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
243 SectionKind::getMetadata(), "types_begin");
244
245 DwarfSwiftASTSection =
246 Ctx->getMachOSection("__DWARF", "__swift_ast", MachO::S_ATTR_DEBUG,
247 SectionKind::getMetadata());
248
249 DwarfAbbrevSection =
250 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
251 SectionKind::getMetadata(), "section_abbrev");
252 DwarfInfoSection =
253 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
254 SectionKind::getMetadata(), "section_info");
255 DwarfLineSection =
256 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
257 SectionKind::getMetadata(), "section_line");
258 DwarfLineStrSection =
259 Ctx->getMachOSection("__DWARF", "__debug_line_str", MachO::S_ATTR_DEBUG,
260 SectionKind::getMetadata(), "section_line_str");
261 DwarfFrameSection =
262 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
263 SectionKind::getMetadata(), "section_frame");
264 DwarfPubNamesSection =
265 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
266 SectionKind::getMetadata());
267 DwarfPubTypesSection =
268 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
269 SectionKind::getMetadata());
270 DwarfGnuPubNamesSection =
271 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
272 SectionKind::getMetadata());
273 DwarfGnuPubTypesSection =
274 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
275 SectionKind::getMetadata());
276 DwarfStrSection =
277 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
278 SectionKind::getMetadata(), "info_string");
279 DwarfStrOffSection =
280 Ctx->getMachOSection("__DWARF", "__debug_str_offs", MachO::S_ATTR_DEBUG,
281 SectionKind::getMetadata(), "section_str_off");
282 DwarfAddrSection =
283 Ctx->getMachOSection("__DWARF", "__debug_addr", MachO::S_ATTR_DEBUG,
284 SectionKind::getMetadata(), "section_info");
285 DwarfLocSection =
286 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
287 SectionKind::getMetadata(), "section_debug_loc");
288 DwarfLoclistsSection =
289 Ctx->getMachOSection("__DWARF", "__debug_loclists", MachO::S_ATTR_DEBUG,
290 SectionKind::getMetadata(), "section_debug_loc");
291
292 DwarfARangesSection =
293 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
294 SectionKind::getMetadata());
295 DwarfRangesSection =
296 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
297 SectionKind::getMetadata(), "debug_range");
298 DwarfRnglistsSection =
299 Ctx->getMachOSection("__DWARF", "__debug_rnglists", MachO::S_ATTR_DEBUG,
300 SectionKind::getMetadata(), "debug_range");
301 DwarfMacinfoSection =
302 Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG,
303 SectionKind::getMetadata(), "debug_macinfo");
304 DwarfMacroSection =
305 Ctx->getMachOSection("__DWARF", "__debug_macro", MachO::S_ATTR_DEBUG,
306 SectionKind::getMetadata(), "debug_macro");
307 DwarfDebugInlineSection =
308 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
309 SectionKind::getMetadata());
310 DwarfCUIndexSection =
311 Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG,
312 SectionKind::getMetadata());
313 DwarfTUIndexSection =
314 Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG,
315 SectionKind::getMetadata());
316 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
317 0, SectionKind::getMetadata());
318
319 FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
320 0, SectionKind::getMetadata());
321
322 RemarksSection = Ctx->getMachOSection(
323 "__LLVM", "__remarks", MachO::S_ATTR_DEBUG, SectionKind::getMetadata());
324
325 PseudoProbeSection =
326 Ctx->getMachOSection("__PSEUDO_PROBE", "__probes",
327 MachO::S_ATTR_DEBUG | MachO::S_ATTR_NO_DEAD_STRIP,
328 SectionKind::getMetadata());
329 PseudoProbeDescSection =
330 Ctx->getMachOSection("__PSEUDO_PROBE", "__probe_descs",
331 MachO::S_ATTR_DEBUG | MachO::S_ATTR_NO_DEAD_STRIP,
332 SectionKind::getMetadata());
333
334 // The architecture of dsymutil makes it very difficult to copy the Swift
335 // reflection metadata sections into the __TEXT segment, so dsymutil creates
336 // these sections in the __DWARF segment instead.
337 if (!Ctx->getSwift5ReflectionSegmentName().empty()) {
338#define HANDLE_SWIFT_SECTION(KIND, MACHO, ELF, COFF) \
339 Swift5ReflectionSections \
340 [llvm::binaryformat::Swift5ReflectionSectionKind::KIND] = \
341 Ctx->getMachOSection(Ctx->getSwift5ReflectionSegmentName().data(), \
342 MACHO, 0, SectionKind::getMetadata());
343#include "llvm/BinaryFormat/Swift.def"
344 }
345
346 TLSExtraDataSection = TLSTLVSection;
347}
348
349void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T, bool Large) {
350 switch (T.getArch()) {
351 case Triple::mips:
352 case Triple::mipsel:
353 case Triple::mips64:
354 case Triple::mips64el:
355 // We cannot use DW_EH_PE_sdata8 for the large PositionIndependent case
356 // since there is no R_MIPS_PC64 relocation (only a 32-bit version).
357 // In fact DW_EH_PE_sdata4 is enough for us now, and GNU ld doesn't
358 // support pcrel|sdata8 well. Let's use sdata4 for now.
359 if (PositionIndependent)
360 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
361 else
362 FDECFIEncoding = Ctx->getAsmInfo().getCodePointerSize() == 4
363 ? dwarf::DW_EH_PE_sdata4
364 : dwarf::DW_EH_PE_sdata8;
365 break;
366 case Triple::ppc64:
367 case Triple::ppc64le:
368 case Triple::aarch64:
369 case Triple::aarch64_be:
370 case Triple::x86_64:
371 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
372 ((Large || Ctx->getTargetOptions().LargeEHEncoding)
373 ? dwarf::DW_EH_PE_sdata8
374 : dwarf::DW_EH_PE_sdata4);
375 break;
376 case Triple::bpfel:
377 case Triple::bpfeb:
378 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
379 break;
380 case Triple::hexagon:
381 FDECFIEncoding =
382 PositionIndependent ? dwarf::DW_EH_PE_pcrel : dwarf::DW_EH_PE_absptr;
383 break;
384 case Triple::xtensa:
385 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
386 break;
387 default:
388 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
389 break;
390 }
391
392 unsigned EHSectionType = T.getArch() == Triple::x86_64
393 ? ELF::SHT_X86_64_UNWIND
394 : ELF::SHT_PROGBITS;
395 switch (T.getArch()) {
396 case Triple::x86_64:
397 SFrameABIArch = sframe::ABI::AMD64EndianLittle;
398 break;
399 case Triple::aarch64:
400 SFrameABIArch = sframe::ABI::AArch64EndianLittle;
401 break;
402 case Triple::aarch64_be:
403 SFrameABIArch = sframe::ABI::AArch64EndianBig;
404 break;
405 default:
406 break;
407 }
408
409 // Solaris requires different flags for .eh_frame to seemingly every other
410 // platform.
411 unsigned EHSectionFlags = ELF::SHF_ALLOC;
412 if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
413 EHSectionFlags |= ELF::SHF_WRITE;
414
415 // ELF
416 BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
417 ELF::SHF_WRITE | ELF::SHF_ALLOC);
418
419 TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
420 ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
421
422 DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
423 ELF::SHF_WRITE | ELF::SHF_ALLOC);
424
425 ReadOnlySection =
426 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
427
428 TLSDataSection =
429 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
430 ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
431
432 TLSBSSSection = Ctx->getELFSection(
433 ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
434
435 DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
436 ELF::SHF_ALLOC | ELF::SHF_WRITE);
437
438 unsigned MergeableCstFlags = ELF::SHF_ALLOC | ELF::SHF_MERGE;
439 StringRef CstPrefix = ".rodata";
440 if (Large && T.getArch() == Triple::x86_64) {
441 MergeableCstFlags |= ELF::SHF_X86_64_LARGE;
442 CstPrefix = ".lrodata";
443 }
444
445 MergeableConst4Section = Ctx->getELFSection(
446 CstPrefix + ".cst4", ELF::SHT_PROGBITS, MergeableCstFlags, 4);
447
448 MergeableConst8Section = Ctx->getELFSection(
449 CstPrefix + ".cst8", ELF::SHT_PROGBITS, MergeableCstFlags, 8);
450
451 MergeableConst16Section = Ctx->getELFSection(
452 CstPrefix + ".cst16", ELF::SHT_PROGBITS, MergeableCstFlags, 16);
453
454 MergeableConst32Section = Ctx->getELFSection(
455 CstPrefix + ".cst32", ELF::SHT_PROGBITS, MergeableCstFlags, 32);
456
457 // Exception Handling Sections.
458
459 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
460 // it contains relocatable pointers. In PIC mode, this is probably a big
461 // runtime hit for C++ apps. Either the contents of the LSDA need to be
462 // adjusted or this should be a data section.
463 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
464 ELF::SHF_ALLOC);
465
466 COFFDebugSymbolsSection = nullptr;
467 COFFDebugTypesSection = nullptr;
468
469 unsigned DebugSecType = ELF::SHT_PROGBITS;
470
471 // MIPS .debug_* sections should have SHT_MIPS_DWARF section type
472 // to distinguish among sections contain DWARF and ECOFF debug formats.
473 // Sections with ECOFF debug format are obsoleted and marked by SHT_PROGBITS.
474 if (T.isMIPS())
475 DebugSecType = ELF::SHT_MIPS_DWARF;
476
477 // Debug Info Sections.
478 DwarfAbbrevSection =
479 Ctx->getELFSection(".debug_abbrev", DebugSecType, 0);
480 DwarfInfoSection = Ctx->getELFSection(".debug_info", DebugSecType, 0);
481 DwarfLineSection = Ctx->getELFSection(".debug_line", DebugSecType, 0);
482 DwarfLineStrSection =
483 Ctx->getELFSection(".debug_line_str", DebugSecType,
484 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1);
485 DwarfFrameSection = Ctx->getELFSection(".debug_frame", DebugSecType, 0);
486 DwarfPubNamesSection =
487 Ctx->getELFSection(".debug_pubnames", DebugSecType, 0);
488 DwarfPubTypesSection =
489 Ctx->getELFSection(".debug_pubtypes", DebugSecType, 0);
490 DwarfGnuPubNamesSection =
491 Ctx->getELFSection(".debug_gnu_pubnames", DebugSecType, 0);
492 DwarfGnuPubTypesSection =
493 Ctx->getELFSection(".debug_gnu_pubtypes", DebugSecType, 0);
494 DwarfStrSection =
495 Ctx->getELFSection(".debug_str", DebugSecType,
496 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1);
497 DwarfLocSection = Ctx->getELFSection(".debug_loc", DebugSecType, 0);
498 DwarfARangesSection =
499 Ctx->getELFSection(".debug_aranges", DebugSecType, 0);
500 DwarfRangesSection =
501 Ctx->getELFSection(".debug_ranges", DebugSecType, 0);
502 DwarfMacinfoSection =
503 Ctx->getELFSection(".debug_macinfo", DebugSecType, 0);
504 DwarfMacroSection = Ctx->getELFSection(".debug_macro", DebugSecType, 0);
505
506 // DWARF5 Experimental Debug Info
507
508 // Accelerator Tables
509 DwarfDebugNamesSection =
510 Ctx->getELFSection(".debug_names", ELF::SHT_PROGBITS, 0);
511 DwarfAccelNamesSection =
512 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0);
513 DwarfAccelObjCSection =
514 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0);
515 DwarfAccelNamespaceSection =
516 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0);
517 DwarfAccelTypesSection =
518 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0);
519
520 // String Offset and Address Sections
521 DwarfStrOffSection =
522 Ctx->getELFSection(".debug_str_offsets", DebugSecType, 0);
523 DwarfAddrSection = Ctx->getELFSection(".debug_addr", DebugSecType, 0);
524 DwarfRnglistsSection = Ctx->getELFSection(".debug_rnglists", DebugSecType, 0);
525 DwarfLoclistsSection = Ctx->getELFSection(".debug_loclists", DebugSecType, 0);
526
527 // Fission Sections
528 DwarfInfoDWOSection =
529 Ctx->getELFSection(".debug_info.dwo", DebugSecType, ELF::SHF_EXCLUDE);
530 DwarfTypesDWOSection =
531 Ctx->getELFSection(".debug_types.dwo", DebugSecType, ELF::SHF_EXCLUDE);
532 DwarfAbbrevDWOSection =
533 Ctx->getELFSection(".debug_abbrev.dwo", DebugSecType, ELF::SHF_EXCLUDE);
534 DwarfStrDWOSection = Ctx->getELFSection(
535 ".debug_str.dwo", DebugSecType,
536 ELF::SHF_MERGE | ELF::SHF_STRINGS | ELF::SHF_EXCLUDE, 1);
537 DwarfLineDWOSection =
538 Ctx->getELFSection(".debug_line.dwo", DebugSecType, ELF::SHF_EXCLUDE);
539 DwarfLocDWOSection =
540 Ctx->getELFSection(".debug_loc.dwo", DebugSecType, ELF::SHF_EXCLUDE);
541 DwarfStrOffDWOSection = Ctx->getELFSection(".debug_str_offsets.dwo",
542 DebugSecType, ELF::SHF_EXCLUDE);
543 DwarfRnglistsDWOSection =
544 Ctx->getELFSection(".debug_rnglists.dwo", DebugSecType, ELF::SHF_EXCLUDE);
545 DwarfMacinfoDWOSection =
546 Ctx->getELFSection(".debug_macinfo.dwo", DebugSecType, ELF::SHF_EXCLUDE);
547 DwarfMacroDWOSection =
548 Ctx->getELFSection(".debug_macro.dwo", DebugSecType, ELF::SHF_EXCLUDE);
549
550 DwarfLoclistsDWOSection =
551 Ctx->getELFSection(".debug_loclists.dwo", DebugSecType, ELF::SHF_EXCLUDE);
552
553 // DWP Sections
554 DwarfCUIndexSection =
555 Ctx->getELFSection(".debug_cu_index", DebugSecType, 0);
556 DwarfTUIndexSection =
557 Ctx->getELFSection(".debug_tu_index", DebugSecType, 0);
558
559 StackMapSection =
560 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
561
562 FaultMapSection =
563 Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
564
565 EHFrameSection =
566 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
567
568 SFrameSection =
569 Ctx->getELFSection(".sframe", ELF::SHT_GNU_SFRAME, ELF::SHF_ALLOC);
570
571 CallGraphSection =
572 Ctx->getELFSection(".llvm.callgraph", ELF::SHT_LLVM_CALL_GRAPH, 0);
573
574 StackSizesSection = Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, 0);
575
576 PseudoProbeSection = Ctx->getELFSection(".pseudo_probe", DebugSecType, 0);
577 PseudoProbeDescSection =
578 Ctx->getELFSection(".pseudo_probe_desc", DebugSecType, 0);
579
580 LLVMStatsSection = Ctx->getELFSection(".llvm_stats", ELF::SHT_PROGBITS, 0);
581}
582
583void MCObjectFileInfo::initGOFFMCObjectFileInfo(const Triple &T) {
584 MCSectionGOFF *RootSDSection = Ctx->getGOFFSection(
585 SectionKind::getMetadata(), "#C",
586 GOFF::SDAttr{GOFF::ESD_TA_Rent, GOFF::ESD_BSC_Section});
587
588 MCSectionGOFF *ADAEDSection = Ctx->getGOFFSection(
589 SectionKind::getMetadata(), GOFF::CLASS_WSA,
590 GOFF::EDAttr{false, GOFF::ESD_RMODE_64, GOFF::ESD_NS_Parts,
591 GOFF::ESD_TS_ByteOriented, GOFF::ESD_BA_Merge,
592 GOFF::ESD_LB_Deferred, GOFF::ESD_RQ_1, 0},
593 RootSDSection);
594 ADAEDSection->setAlignment(Align(16)); // Quadword
595 ADASection = Ctx->getGOFFSection(SectionKind::getData(), "#S",
596 GOFF::PRAttr{false, GOFF::ESD_EXE_DATA,
597 GOFF::ESD_LT_XPLink,
598 GOFF::ESD_BSC_Section, 0},
599 ADAEDSection);
600
601 TextSection = Ctx->getGOFFSection(
602 SectionKind::getText(), GOFF::CLASS_CODE,
603 GOFF::EDAttr{true, GOFF::ESD_RMODE_64, GOFF::ESD_NS_NormalName,
604 GOFF::ESD_TS_ByteOriented, GOFF::ESD_BA_Concatenate,
605 GOFF::ESD_LB_Initial, GOFF::ESD_RQ_0, 0},
606 RootSDSection);
607 TextSection->setAlignment(Align(8)); // Doubleword
608
609 MCSectionGOFF *PPA2ListEDSection = Ctx->getGOFFSection(
610 SectionKind::getMetadata(), GOFF::CLASS_PPA2,
611 GOFF::EDAttr{true, GOFF::ESD_RMODE_64, GOFF::ESD_NS_Parts,
612 GOFF::ESD_TS_ByteOriented, GOFF::ESD_BA_Merge,
613 GOFF::ESD_LB_Initial, GOFF::ESD_RQ_0, 0},
614 RootSDSection);
615 PPA2ListEDSection->setAlignment(Align(8)); // Doubleword
616 PPA2ListSection = Ctx->getGOFFSection(SectionKind::getData(), ".&ppa2",
617 GOFF::PRAttr{true, GOFF::ESD_EXE_DATA,
618 GOFF::ESD_LT_OS,
619 GOFF::ESD_BSC_Section, 0},
620 PPA2ListEDSection);
621
622 IDRLSection = Ctx->getGOFFSection(
623 SectionKind::getData(), "B_IDRL",
624 GOFF::EDAttr{true, GOFF::ESD_RMODE_64, GOFF::ESD_NS_NormalName,
625 GOFF::ESD_TS_Structured, GOFF::ESD_BA_Concatenate,
626 GOFF::ESD_LB_NoLoad, GOFF::ESD_RQ_0, 0},
627 RootSDSection);
628 IDRLSection->setAlignment(Align(8)); // Doubleword
629
630 // Debug Info Sections. The ED name is the same used by the XL compiler.
631 auto InitDebugSection = [this,
632 RootSDSection](StringRef EDName,
633 StringRef LDName) -> MCSectionGOFF * {
634 MCSectionGOFF *ED = Ctx->getGOFFSection(
635 SectionKind::getMetadata(), EDName,
636 GOFF::EDAttr{false, GOFF::ESD_RMODE_64, GOFF::ESD_NS_Parts,
637 GOFF::ESD_TS_ByteOriented, GOFF::ESD_BA_Concatenate,
638 GOFF::ESD_LB_NoLoad, GOFF::ESD_RQ_0, 0},
639 RootSDSection);
640 ED->setAlignment(Align(8)); // Doubleword
641 // At least for llc, this function is called twice! (See function
642 // compileModule() in llc.cpp). Since the context is not cleared, the
643 // already allocated section is returned above. We only add the begin symbol
644 // if it is not yet set to avoid an assertion.
645 MCSymbolGOFF *LD = static_cast<MCSymbolGOFF *>(ED->getBeginSymbol());
646 if (!LD) {
647 LD = static_cast<MCSymbolGOFF *>(getContext().getOrCreateSymbol(LDName));
648 LD->setCodeData(GOFF::ESD_EXE_DATA);
649 LD->setWeak(false);
650 LD->setLinkage(GOFF::ESD_LT_XPLink);
651 LD->setExternal(false);
652 ED->setBeginSymbol(LD);
653 } else
654 assert(LD->getName() == LDName && "Wrong label name");
655 return ED;
656 };
657 DwarfAbbrevSection = InitDebugSection("D_ABREV", ".debug_abbrev");
658 DwarfInfoSection = InitDebugSection("D_INFO", ".debug_info");
659 DwarfLineSection = InitDebugSection("D_LINE", ".debug_line");
660 DwarfFrameSection = InitDebugSection("D_FRAME", ".debug_frame");
661 DwarfPubNamesSection = InitDebugSection("D_PBNMS", ".debug_pubnames");
662 DwarfPubTypesSection = InitDebugSection("D_PTYPES", ".debug_pubtypes");
663 DwarfStrSection = InitDebugSection("D_STR", ".debug_str");
664 DwarfLocSection = InitDebugSection("D_LOC", ".debug_loc");
665 DwarfARangesSection = InitDebugSection("D_ARNGE", ".debug_aranges");
666 DwarfRangesSection = InitDebugSection("D_RNGES", ".debug_ranges");
667 DwarfMacinfoSection = InitDebugSection("D_MACIN", ".debug_macinfo");
668
669 // DWARF 5 sections.
670 DwarfDebugNamesSection = InitDebugSection("D_NAMES", ".debug_names");
671 DwarfStrOffSection = InitDebugSection("D_STROFFS", ".debug_str_offsets");
672 DwarfAddrSection = InitDebugSection("D_ADDR", ".debug_addr");
673 DwarfRnglistsSection = InitDebugSection("D_RNGLISTS", ".debug_rnglists");
674 DwarfLoclistsSection = InitDebugSection("D_LOCLISTS", ".debug_loclists");
675 DwarfLineStrSection = InitDebugSection("D_LINESTR", ".debug_line_str");
676
677 // Special GNU sections.
678 DwarfGnuPubNamesSection = InitDebugSection("D_GPBNMS", ".debug_gnu_pubnames");
679 DwarfGnuPubTypesSection =
680 InitDebugSection("D_GPTYPES", ".debug_gnu_pubtypes");
681
682 // Accelerator Tables.
683 DwarfAccelNamesSection = InitDebugSection("D_APPLNMS", ".apple_names");
684 DwarfAccelNamespaceSection =
685 InitDebugSection("D_APPLNMSP", ".apple_namespaces");
686 DwarfAccelTypesSection = InitDebugSection("D_APPLTYPS", ".apple_types");
687 DwarfAccelObjCSection = InitDebugSection("D_APPLOBJC", ".apple_objc");
688}
689
690void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) {
691 EHFrameSection =
692 Ctx->getCOFFSection(".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
693 COFF::IMAGE_SCN_MEM_READ);
694
695 // Set the `IMAGE_SCN_MEM_16BIT` flag when compiling for thumb mode. This is
696 // used to indicate to the linker that the text segment contains thumb instructions
697 // and to set the ISA selection bit for calls accordingly.
698 const bool IsThumb = T.getArch() == Triple::thumb;
699
700 // COFF
701 BSSSection = Ctx->getCOFFSection(
702 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
703 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE);
704 TextSection = Ctx->getCOFFSection(
705 ".text",
706 (IsThumb ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
707 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
708 COFF::IMAGE_SCN_MEM_READ);
709 DataSection = Ctx->getCOFFSection(
710 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
711 COFF::IMAGE_SCN_MEM_WRITE);
712 ReadOnlySection =
713 Ctx->getCOFFSection(".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
714 COFF::IMAGE_SCN_MEM_READ);
715
716 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::aarch64 ||
717 T.getArch() == Triple::arm || T.getArch() == Triple::thumb) {
718 // On Windows with SEH, the LSDA is emitted into the .xdata section
719 LSDASection = nullptr;
720 } else {
721 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
722 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
723 COFF::IMAGE_SCN_MEM_READ);
724 }
725
726 if (T.getArch() == Triple::aarch64) {
727 ImportCallSection =
728 Ctx->getCOFFSection(".impcall", COFF::IMAGE_SCN_LNK_INFO);
729 } else if (T.getArch() == Triple::x86_64) {
730 // Import Call Optimization on x64 leverages the same metadata as the
731 // retpoline mitigation, hence the unusual section name.
732 ImportCallSection =
733 Ctx->getCOFFSection(".retplne", COFF::IMAGE_SCN_LNK_INFO);
734 }
735
736 // Debug info.
737 COFFDebugSymbolsSection =
738 Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
739 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
740 COFF::IMAGE_SCN_MEM_READ));
741 COFFDebugTypesSection =
742 Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
743 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
744 COFF::IMAGE_SCN_MEM_READ));
745 COFFGlobalTypeHashesSection =
746 Ctx->getCOFFSection(".debug$H", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
747 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
748 COFF::IMAGE_SCN_MEM_READ));
749
750 DwarfAbbrevSection = Ctx->getCOFFSection(
751 ".debug_abbrev", COFF::IMAGE_SCN_MEM_DISCARDABLE |
752 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
753 COFF::IMAGE_SCN_MEM_READ);
754 DwarfInfoSection = Ctx->getCOFFSection(
755 ".debug_info", COFF::IMAGE_SCN_MEM_DISCARDABLE |
756 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
757 COFF::IMAGE_SCN_MEM_READ);
758 DwarfLineSection = Ctx->getCOFFSection(
759 ".debug_line", COFF::IMAGE_SCN_MEM_DISCARDABLE |
760 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
761 COFF::IMAGE_SCN_MEM_READ);
762 DwarfLineStrSection = Ctx->getCOFFSection(
763 ".debug_line_str", COFF::IMAGE_SCN_MEM_DISCARDABLE |
764 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
765 COFF::IMAGE_SCN_MEM_READ);
766 DwarfFrameSection = Ctx->getCOFFSection(
767 ".debug_frame", COFF::IMAGE_SCN_MEM_DISCARDABLE |
768 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
769 COFF::IMAGE_SCN_MEM_READ);
770 DwarfPubNamesSection = Ctx->getCOFFSection(
771 ".debug_pubnames", COFF::IMAGE_SCN_MEM_DISCARDABLE |
772 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
773 COFF::IMAGE_SCN_MEM_READ);
774 DwarfPubTypesSection = Ctx->getCOFFSection(
775 ".debug_pubtypes", COFF::IMAGE_SCN_MEM_DISCARDABLE |
776 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
777 COFF::IMAGE_SCN_MEM_READ);
778 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
779 ".debug_gnu_pubnames", COFF::IMAGE_SCN_MEM_DISCARDABLE |
780 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
781 COFF::IMAGE_SCN_MEM_READ);
782 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
783 ".debug_gnu_pubtypes", COFF::IMAGE_SCN_MEM_DISCARDABLE |
784 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
785 COFF::IMAGE_SCN_MEM_READ);
786 DwarfStrSection = Ctx->getCOFFSection(
787 ".debug_str", COFF::IMAGE_SCN_MEM_DISCARDABLE |
788 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
789 COFF::IMAGE_SCN_MEM_READ);
790 DwarfStrOffSection = Ctx->getCOFFSection(
791 ".debug_str_offsets", COFF::IMAGE_SCN_MEM_DISCARDABLE |
792 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
793 COFF::IMAGE_SCN_MEM_READ);
794 DwarfLocSection = Ctx->getCOFFSection(
795 ".debug_loc", COFF::IMAGE_SCN_MEM_DISCARDABLE |
796 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
797 COFF::IMAGE_SCN_MEM_READ);
798 DwarfLoclistsSection = Ctx->getCOFFSection(
799 ".debug_loclists", COFF::IMAGE_SCN_MEM_DISCARDABLE |
800 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
801 COFF::IMAGE_SCN_MEM_READ);
802 DwarfARangesSection = Ctx->getCOFFSection(
803 ".debug_aranges", COFF::IMAGE_SCN_MEM_DISCARDABLE |
804 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
805 COFF::IMAGE_SCN_MEM_READ);
806 DwarfRangesSection = Ctx->getCOFFSection(
807 ".debug_ranges", COFF::IMAGE_SCN_MEM_DISCARDABLE |
808 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
809 COFF::IMAGE_SCN_MEM_READ);
810 DwarfRnglistsSection = Ctx->getCOFFSection(
811 ".debug_rnglists", COFF::IMAGE_SCN_MEM_DISCARDABLE |
812 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
813 COFF::IMAGE_SCN_MEM_READ);
814 DwarfMacinfoSection = Ctx->getCOFFSection(
815 ".debug_macinfo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
816 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
817 COFF::IMAGE_SCN_MEM_READ);
818 DwarfMacroSection = Ctx->getCOFFSection(
819 ".debug_macro", COFF::IMAGE_SCN_MEM_DISCARDABLE |
820 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
821 COFF::IMAGE_SCN_MEM_READ);
822 DwarfMacinfoDWOSection = Ctx->getCOFFSection(
823 ".debug_macinfo.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
824 COFF::IMAGE_SCN_LNK_REMOVE |
825 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
826 COFF::IMAGE_SCN_MEM_READ);
827 DwarfMacroDWOSection = Ctx->getCOFFSection(
828 ".debug_macro.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
829 COFF::IMAGE_SCN_LNK_REMOVE |
830 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
831 COFF::IMAGE_SCN_MEM_READ);
832 DwarfInfoDWOSection = Ctx->getCOFFSection(
833 ".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
834 COFF::IMAGE_SCN_LNK_REMOVE |
835 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
836 COFF::IMAGE_SCN_MEM_READ);
837 DwarfTypesDWOSection = Ctx->getCOFFSection(
838 ".debug_types.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
839 COFF::IMAGE_SCN_LNK_REMOVE |
840 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
841 COFF::IMAGE_SCN_MEM_READ);
842 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
843 ".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
844 COFF::IMAGE_SCN_LNK_REMOVE |
845 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
846 COFF::IMAGE_SCN_MEM_READ);
847 DwarfStrDWOSection = Ctx->getCOFFSection(
848 ".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
849 COFF::IMAGE_SCN_LNK_REMOVE |
850 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
851 COFF::IMAGE_SCN_MEM_READ);
852 DwarfLineDWOSection = Ctx->getCOFFSection(
853 ".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
854 COFF::IMAGE_SCN_LNK_REMOVE |
855 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
856 COFF::IMAGE_SCN_MEM_READ);
857 DwarfLocDWOSection = Ctx->getCOFFSection(
858 ".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
859 COFF::IMAGE_SCN_LNK_REMOVE |
860 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
861 COFF::IMAGE_SCN_MEM_READ);
862 DwarfLoclistsDWOSection = Ctx->getCOFFSection(
863 ".debug_loclists.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
864 COFF::IMAGE_SCN_LNK_REMOVE |
865 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
866 COFF::IMAGE_SCN_MEM_READ);
867 DwarfStrOffDWOSection = Ctx->getCOFFSection(
868 ".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
869 COFF::IMAGE_SCN_LNK_REMOVE |
870 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
871 COFF::IMAGE_SCN_MEM_READ);
872 DwarfRnglistsDWOSection = Ctx->getCOFFSection(
873 ".debug_rnglists.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
874 COFF::IMAGE_SCN_LNK_REMOVE |
875 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
876 COFF::IMAGE_SCN_MEM_READ);
877 DwarfAddrSection = Ctx->getCOFFSection(
878 ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE |
879 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
880 COFF::IMAGE_SCN_MEM_READ);
881 DwarfCUIndexSection = Ctx->getCOFFSection(
882 ".debug_cu_index", COFF::IMAGE_SCN_MEM_DISCARDABLE |
883 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
884 COFF::IMAGE_SCN_MEM_READ);
885 DwarfTUIndexSection = Ctx->getCOFFSection(
886 ".debug_tu_index", COFF::IMAGE_SCN_MEM_DISCARDABLE |
887 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
888 COFF::IMAGE_SCN_MEM_READ);
889 DwarfDebugNamesSection = Ctx->getCOFFSection(
890 ".debug_names", COFF::IMAGE_SCN_MEM_DISCARDABLE |
891 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
892 COFF::IMAGE_SCN_MEM_READ);
893 DwarfAccelNamesSection = Ctx->getCOFFSection(
894 ".apple_names", COFF::IMAGE_SCN_MEM_DISCARDABLE |
895 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
896 COFF::IMAGE_SCN_MEM_READ);
897 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
898 ".apple_namespaces", COFF::IMAGE_SCN_MEM_DISCARDABLE |
899 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
900 COFF::IMAGE_SCN_MEM_READ);
901 DwarfAccelTypesSection = Ctx->getCOFFSection(
902 ".apple_types", COFF::IMAGE_SCN_MEM_DISCARDABLE |
903 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
904 COFF::IMAGE_SCN_MEM_READ);
905 DwarfAccelObjCSection = Ctx->getCOFFSection(
906 ".apple_objc", COFF::IMAGE_SCN_MEM_DISCARDABLE |
907 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
908 COFF::IMAGE_SCN_MEM_READ);
909
910 DrectveSection = Ctx->getCOFFSection(
911 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE);
912
913 PDataSection =
914 Ctx->getCOFFSection(".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
915 COFF::IMAGE_SCN_MEM_READ);
916
917 XDataSection =
918 Ctx->getCOFFSection(".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
919 COFF::IMAGE_SCN_MEM_READ);
920
921 SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO);
922
923 GEHContSection =
924 Ctx->getCOFFSection(".gehcont$y", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
925 COFF::IMAGE_SCN_MEM_READ);
926
927 GFIDsSection =
928 Ctx->getCOFFSection(".gfids$y", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
929 COFF::IMAGE_SCN_MEM_READ);
930
931 GIATsSection =
932 Ctx->getCOFFSection(".giats$y", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
933 COFF::IMAGE_SCN_MEM_READ);
934
935 GLJMPSection =
936 Ctx->getCOFFSection(".gljmp$y", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
937 COFF::IMAGE_SCN_MEM_READ);
938
939 TLSDataSection = Ctx->getCOFFSection(
940 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
941 COFF::IMAGE_SCN_MEM_WRITE);
942
943 StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
944 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
945 COFF::IMAGE_SCN_MEM_READ);
946
947 // Set IMAGE_SCN_MEM_DISCARDABLE so that lld will not truncate section name.
948 PseudoProbeSection = Ctx->getCOFFSection(
949 ".pseudo_probe", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
950 COFF::IMAGE_SCN_MEM_DISCARDABLE |
951 COFF::IMAGE_SCN_MEM_READ);
952 PseudoProbeDescSection = Ctx->getCOFFSection(
953 ".pseudo_probe_desc", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
954 COFF::IMAGE_SCN_MEM_DISCARDABLE |
955 COFF::IMAGE_SCN_MEM_READ);
956}
957
958void MCObjectFileInfo::initSPIRVMCObjectFileInfo(const Triple &T) {
959 // Put everything in a single binary section.
960 TextSection = Ctx->getSPIRVSection();
961}
962
963void MCObjectFileInfo::initWasmMCObjectFileInfo(const Triple &T) {
964 TextSection = Ctx->getWasmSection(".text", SectionKind::getText());
965 DataSection = Ctx->getWasmSection(".data", SectionKind::getData());
966
967 DwarfLineSection =
968 Ctx->getWasmSection(".debug_line", SectionKind::getMetadata());
969 DwarfLineStrSection =
970 Ctx->getWasmSection(".debug_line_str", SectionKind::getMetadata(),
971 wasm::WASM_SEG_FLAG_STRINGS);
972 DwarfStrSection = Ctx->getWasmSection(
973 ".debug_str", SectionKind::getMetadata(), wasm::WASM_SEG_FLAG_STRINGS);
974 DwarfLocSection =
975 Ctx->getWasmSection(".debug_loc", SectionKind::getMetadata());
976 DwarfAbbrevSection =
977 Ctx->getWasmSection(".debug_abbrev", SectionKind::getMetadata());
978 DwarfARangesSection = Ctx->getWasmSection(".debug_aranges", SectionKind::getMetadata());
979 DwarfRangesSection =
980 Ctx->getWasmSection(".debug_ranges", SectionKind::getMetadata());
981 DwarfMacinfoSection =
982 Ctx->getWasmSection(".debug_macinfo", SectionKind::getMetadata());
983 DwarfMacroSection =
984 Ctx->getWasmSection(".debug_macro", SectionKind::getMetadata());
985 DwarfCUIndexSection = Ctx->getWasmSection(".debug_cu_index", SectionKind::getMetadata());
986 DwarfTUIndexSection = Ctx->getWasmSection(".debug_tu_index", SectionKind::getMetadata());
987 DwarfInfoSection =
988 Ctx->getWasmSection(".debug_info", SectionKind::getMetadata());
989 DwarfFrameSection = Ctx->getWasmSection(".debug_frame", SectionKind::getMetadata());
990 DwarfPubNamesSection = Ctx->getWasmSection(".debug_pubnames", SectionKind::getMetadata());
991 DwarfPubTypesSection = Ctx->getWasmSection(".debug_pubtypes", SectionKind::getMetadata());
992 DwarfGnuPubNamesSection =
993 Ctx->getWasmSection(".debug_gnu_pubnames", SectionKind::getMetadata());
994 DwarfGnuPubTypesSection =
995 Ctx->getWasmSection(".debug_gnu_pubtypes", SectionKind::getMetadata());
996
997 DwarfDebugNamesSection =
998 Ctx->getWasmSection(".debug_names", SectionKind::getMetadata());
999 DwarfStrOffSection =
1000 Ctx->getWasmSection(".debug_str_offsets", SectionKind::getMetadata());
1001 DwarfAddrSection =
1002 Ctx->getWasmSection(".debug_addr", SectionKind::getMetadata());
1003 DwarfRnglistsSection =
1004 Ctx->getWasmSection(".debug_rnglists", SectionKind::getMetadata());
1005 DwarfLoclistsSection =
1006 Ctx->getWasmSection(".debug_loclists", SectionKind::getMetadata());
1007
1008 // Fission Sections
1009 DwarfInfoDWOSection =
1010 Ctx->getWasmSection(".debug_info.dwo", SectionKind::getMetadata());
1011 DwarfTypesDWOSection =
1012 Ctx->getWasmSection(".debug_types.dwo", SectionKind::getMetadata());
1013 DwarfAbbrevDWOSection =
1014 Ctx->getWasmSection(".debug_abbrev.dwo", SectionKind::getMetadata());
1015 DwarfStrDWOSection =
1016 Ctx->getWasmSection(".debug_str.dwo", SectionKind::getMetadata(),
1017 wasm::WASM_SEG_FLAG_STRINGS);
1018 DwarfLineDWOSection =
1019 Ctx->getWasmSection(".debug_line.dwo", SectionKind::getMetadata());
1020 DwarfLocDWOSection =
1021 Ctx->getWasmSection(".debug_loc.dwo", SectionKind::getMetadata());
1022 DwarfStrOffDWOSection =
1023 Ctx->getWasmSection(".debug_str_offsets.dwo", SectionKind::getMetadata());
1024 DwarfRnglistsDWOSection =
1025 Ctx->getWasmSection(".debug_rnglists.dwo", SectionKind::getMetadata());
1026 DwarfMacinfoDWOSection =
1027 Ctx->getWasmSection(".debug_macinfo.dwo", SectionKind::getMetadata());
1028 DwarfMacroDWOSection =
1029 Ctx->getWasmSection(".debug_macro.dwo", SectionKind::getMetadata());
1030
1031 DwarfLoclistsDWOSection =
1032 Ctx->getWasmSection(".debug_loclists.dwo", SectionKind::getMetadata());
1033
1034 // DWP Sections
1035 DwarfCUIndexSection =
1036 Ctx->getWasmSection(".debug_cu_index", SectionKind::getMetadata());
1037 DwarfTUIndexSection =
1038 Ctx->getWasmSection(".debug_tu_index", SectionKind::getMetadata());
1039
1040 // Wasm use data section for LSDA.
1041 // TODO Consider putting each function's exception table in a separate
1042 // section, as in -function-sections, to facilitate lld's --gc-section.
1043 LSDASection = Ctx->getWasmSection(".rodata.gcc_except_table",
1044 SectionKind::getReadOnlyWithRel());
1045
1046 // TODO: Define more sections.
1047}
1048
1049void MCObjectFileInfo::initXCOFFMCObjectFileInfo(const Triple &T) {
1050 // The default csect for program code. Functions without a specified section
1051 // get placed into this csect. The choice of csect name is not a property of
1052 // the ABI or object file format, but various tools rely on the section
1053 // name being empty (considering named symbols to be "user symbol names").
1054 TextSection = Ctx->getXCOFFSection(
1055 "..text..", // Use a non-null name to work around an AIX assembler bug...
1056 SectionKind::getText(),
1057 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_PR, XCOFF::XTY_SD),
1058 /* MultiSymbolsAllowed*/ true);
1059
1060 // ... but use a null name when generating the symbol table.
1061 MCSectionXCOFF *TS = static_cast<MCSectionXCOFF *>(TextSection);
1062 TS->getQualNameSymbol()->setSymbolTableName("");
1063 TS->setSymbolTableName("");
1064
1065 DataSection = Ctx->getXCOFFSection(
1066 ".data", SectionKind::getData(),
1067 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RW, XCOFF::XTY_SD),
1068 /* MultiSymbolsAllowed*/ true);
1069
1070 ReadOnlySection = Ctx->getXCOFFSection(
1071 ".rodata", SectionKind::getReadOnly(),
1072 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD),
1073 /* MultiSymbolsAllowed*/ true);
1074 ReadOnlySection->setAlignment(Align(4));
1075
1076 ReadOnly8Section = Ctx->getXCOFFSection(
1077 ".rodata.8", SectionKind::getReadOnly(),
1078 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD),
1079 /* MultiSymbolsAllowed*/ true);
1080 ReadOnly8Section->setAlignment(Align(8));
1081
1082 ReadOnly16Section = Ctx->getXCOFFSection(
1083 ".rodata.16", SectionKind::getReadOnly(),
1084 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO, XCOFF::XTY_SD),
1085 /* MultiSymbolsAllowed*/ true);
1086 ReadOnly16Section->setAlignment(Align(16));
1087
1088 TLSDataSection = Ctx->getXCOFFSection(
1089 ".tdata", SectionKind::getThreadData(),
1090 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_TL, XCOFF::XTY_SD),
1091 /* MultiSymbolsAllowed*/ true);
1092
1093 TOCBaseSection = Ctx->getXCOFFSection(
1094 "TOC", SectionKind::getData(),
1095 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_TC0,
1096 XCOFF::XTY_SD));
1097
1098 // The TOC-base always has 0 size, but 4 byte alignment.
1099 TOCBaseSection->setAlignment(Align(4));
1100
1101 LSDASection = Ctx->getXCOFFSection(
1102 ".gcc_except_table", SectionKind::getReadOnly(),
1103 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RO,
1104 XCOFF::XTY_SD));
1105
1106 CompactUnwindSection = Ctx->getXCOFFSection(
1107 ".eh_info_table", SectionKind::getData(),
1108 XCOFF::CsectProperties(XCOFF::StorageMappingClass::XMC_RW,
1109 XCOFF::XTY_SD));
1110
1111 // DWARF sections for XCOFF are not csects. They are special STYP_DWARF
1112 // sections, and the individual DWARF sections are distinguished by their
1113 // section subtype.
1114 DwarfAbbrevSection = Ctx->getXCOFFSection(
1115 ".dwabrev", SectionKind::getMetadata(),
1116 /* CsectProperties */ std::nullopt,
1117 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWABREV);
1118
1119 DwarfInfoSection = Ctx->getXCOFFSection(
1120 ".dwinfo", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt,
1121 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWINFO);
1122
1123 DwarfLineSection = Ctx->getXCOFFSection(
1124 ".dwline", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt,
1125 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWLINE);
1126
1127 DwarfFrameSection = Ctx->getXCOFFSection(
1128 ".dwframe", SectionKind::getMetadata(),
1129 /* CsectProperties */ std::nullopt,
1130 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWFRAME);
1131
1132 DwarfPubNamesSection = Ctx->getXCOFFSection(
1133 ".dwpbnms", SectionKind::getMetadata(),
1134 /* CsectProperties */ std::nullopt,
1135 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWPBNMS);
1136
1137 DwarfPubTypesSection = Ctx->getXCOFFSection(
1138 ".dwpbtyp", SectionKind::getMetadata(),
1139 /* CsectProperties */ std::nullopt,
1140 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWPBTYP);
1141
1142 DwarfStrSection = Ctx->getXCOFFSection(
1143 ".dwstr", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt,
1144 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWSTR);
1145
1146 DwarfLocSection = Ctx->getXCOFFSection(
1147 ".dwloc", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt,
1148 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWLOC);
1149
1150 DwarfARangesSection = Ctx->getXCOFFSection(
1151 ".dwarnge", SectionKind::getMetadata(),
1152 /* CsectProperties */ std::nullopt,
1153 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWARNGE);
1154
1155 DwarfRangesSection = Ctx->getXCOFFSection(
1156 ".dwrnges", SectionKind::getMetadata(),
1157 /* CsectProperties */ std::nullopt,
1158 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWRNGES);
1159
1160 DwarfMacinfoSection = Ctx->getXCOFFSection(
1161 ".dwmac", SectionKind::getMetadata(), /* CsectProperties */ std::nullopt,
1162 /* MultiSymbolsAllowed */ true, XCOFF::SSUBTYP_DWMAC);
1163}
1164
1165void MCObjectFileInfo::initDXContainerObjectFileInfo(const Triple &T) {
1166 // At the moment the DXBC section should end up empty.
1167 TextSection = Ctx->getDXContainerSection("DXBC", SectionKind::getText());
1168}
1169
1170MCObjectFileInfo::~MCObjectFileInfo() = default;
1171
1172void MCObjectFileInfo::initMCObjectFileInfo(MCContext &MCCtx, bool PIC,
1173 bool LargeCodeModel) {
1174 PositionIndependent = PIC;
1175 Ctx = &MCCtx;
1176
1177 // Common.
1178 SupportsCompactUnwindWithoutEHFrame = false;
1179 OmitDwarfIfHaveCompactUnwind = false;
1180
1181 FDECFIEncoding = dwarf::DW_EH_PE_absptr;
1182
1183 CompactUnwindDwarfEHFrameOnly = 0;
1184
1185 EHFrameSection = nullptr; // Created on demand.
1186 SFrameSection = nullptr; // Created on demand.
1187 CompactUnwindSection = nullptr; // Used only by selected targets.
1188 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
1189 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
1190 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
1191 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
1192
1193 const Triple &TheTriple = Ctx->getTargetTriple();
1194 switch (Ctx->getObjectFileType()) {
1195 case MCContext::IsMachO:
1196 initMachOMCObjectFileInfo(TheTriple);
1197 break;
1198 case MCContext::IsCOFF:
1199 initCOFFMCObjectFileInfo(TheTriple);
1200 break;
1201 case MCContext::IsELF:
1202 initELFMCObjectFileInfo(TheTriple, LargeCodeModel);
1203 break;
1204 case MCContext::IsGOFF:
1205 initGOFFMCObjectFileInfo(TheTriple);
1206 break;
1207 case MCContext::IsSPIRV:
1208 initSPIRVMCObjectFileInfo(TheTriple);
1209 break;
1210 case MCContext::IsWasm:
1211 initWasmMCObjectFileInfo(TheTriple);
1212 break;
1213 case MCContext::IsXCOFF:
1214 initXCOFFMCObjectFileInfo(TheTriple);
1215 break;
1216 case MCContext::IsDXContainer:
1217 initDXContainerObjectFileInfo(TheTriple);
1218 break;
1219 }
1220}
1221
1222MCSection *MCObjectFileInfo::getDwarfComdatSection(const char *Name,
1223 uint64_t Hash) const {
1224 switch (Ctx->getTargetTriple().getObjectFormat()) {
1225 case Triple::ELF:
1226 return Ctx->getELFSection(Name, ELF::SHT_PROGBITS, ELF::SHF_GROUP, 0,
1227 utostr(Hash), /*IsComdat=*/true);
1228 case Triple::Wasm:
1229 return Ctx->getWasmSection(Name, SectionKind::getMetadata(), 0,
1230 utostr(Hash), MCSection::NonUniqueID);
1231 case Triple::MachO:
1232 case Triple::COFF:
1233 case Triple::GOFF:
1234 case Triple::SPIRV:
1235 case Triple::XCOFF:
1236 case Triple::DXContainer:
1237 case Triple::UnknownObjectFormat:
1238 report_fatal_error("Cannot get DWARF comdat section for this object file "
1239 "format: not implemented.");
1240 break;
1241 }
1242 llvm_unreachable("Unknown ObjectFormatType");
1243}
1244
1245MCSection *
1246MCObjectFileInfo::getCallGraphSection(const MCSection &TextSec) const {
1247 if (Ctx->getObjectFileType() != MCContext::IsELF)
1248 return CallGraphSection;
1249
1250 const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec);
1251 unsigned Flags = ELF::SHF_LINK_ORDER;
1252 StringRef GroupName;
1253 if (const MCSymbol *Group = ElfSec.getGroup()) {
1254 GroupName = Group->getName();
1255 Flags |= ELF::SHF_GROUP;
1256 }
1257
1258 return Ctx->getELFSection(
1259 ".llvm.callgraph", ELF::SHT_LLVM_CALL_GRAPH, Flags, 0, GroupName,
1260 /*IsComdat=*/true, ElfSec.getUniqueID(),
1261 static_cast<const MCSymbolELF *>(TextSec.getBeginSymbol()));
1262}
1263
1264MCSection *
1265MCObjectFileInfo::getStackSizesSection(const MCSection &TextSec) const {
1266 if ((Ctx->getObjectFileType() != MCContext::IsELF) ||
1267 Ctx->getTargetTriple().isPS4())
1268 return StackSizesSection;
1269
1270 const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec);
1271 unsigned Flags = ELF::SHF_LINK_ORDER;
1272 StringRef GroupName;
1273 if (const MCSymbol *Group = ElfSec.getGroup()) {
1274 GroupName = Group->getName();
1275 Flags |= ELF::SHF_GROUP;
1276 }
1277
1278 return Ctx->getELFSection(
1279 ".stack_sizes", ELF::SHT_PROGBITS, Flags, 0, GroupName, true,
1280 ElfSec.getUniqueID(),
1281 static_cast<const MCSymbolELF *>(TextSec.getBeginSymbol()));
1282}
1283
1284MCSection *
1285MCObjectFileInfo::getBBAddrMapSection(const MCSection &TextSec) const {
1286 constexpr StringLiteral Name = ".llvm_bb_addr_map";
1287 if (Ctx->getObjectFileType() == MCContext::IsELF) {
1288 const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec);
1289 unsigned Flags = ELF::SHF_LINK_ORDER;
1290 StringRef GroupName;
1291 if (const MCSymbol *Group = ElfSec.getGroup()) {
1292 GroupName = Group->getName();
1293 Flags |= ELF::SHF_GROUP;
1294 }
1295
1296 // Use the text section's begin symbol and unique ID to create a separate
1297 // .llvm_bb_addr_map section associated with every unique text section.
1298 return Ctx->getELFSection(
1299 Name, ELF::SHT_LLVM_BB_ADDR_MAP, Flags, 0, GroupName, true,
1300 ElfSec.getUniqueID(),
1301 static_cast<const MCSymbolELF *>(TextSec.getBeginSymbol()));
1302 } else if (Ctx->getObjectFileType() == MCContext::IsCOFF) {
1303 StringRef COMDATSymName;
1304 int Selection = 0;
1305 unsigned Characteristics = COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
1306 COFF::IMAGE_SCN_MEM_DISCARDABLE |
1307 COFF::IMAGE_SCN_MEM_READ;
1308 const auto &COFFSec = static_cast<const MCSectionCOFF &>(TextSec);
1309 if (const MCSymbol *COMDATSym = COFFSec.getCOMDATSymbol()) {
1310 if (!Ctx->getAsmInfo().hasCOFFAssociativeComdats())
1311 report_fatal_error("BB address map requires associative COMDAT "
1312 "support for COMDAT functions");
1313 COMDATSymName = COMDATSym->getName();
1314 Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
1315 Selection = COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
1316 }
1317 return Ctx->getCOFFSection(Name, Characteristics, COMDATSymName, Selection,
1318 COFFSec.getUniqueID());
1319 }
1320
1321 return nullptr;
1322}
1323
1324MCSection *
1325MCObjectFileInfo::getKCFITrapSection(const MCSection &TextSec) const {
1326 if (Ctx->getObjectFileType() != MCContext::IsELF)
1327 return nullptr;
1328
1329 const MCSectionELF &ElfSec = static_cast<const MCSectionELF &>(TextSec);
1330 unsigned Flags = ELF::SHF_LINK_ORDER | ELF::SHF_ALLOC;
1331 StringRef GroupName;
1332 if (const MCSymbol *Group = ElfSec.getGroup()) {
1333 GroupName = Group->getName();
1334 Flags |= ELF::SHF_GROUP;
1335 }
1336
1337 return Ctx->getELFSection(
1338 ".kcfi_traps", ELF::SHT_PROGBITS, Flags, 0, GroupName,
1339 /*IsComdat=*/true, ElfSec.getUniqueID(),
1340 static_cast<const MCSymbolELF *>(TextSec.getBeginSymbol()));
1341}
1342
1343MCSection *
1344MCObjectFileInfo::getPseudoProbeSection(const MCSection &TextSec) const {
1345 auto ObjFileType = Ctx->getObjectFileType();
1346 if (ObjFileType == MCContext::IsELF) {
1347 const auto &ElfSec = static_cast<const MCSectionELF &>(TextSec);
1348 unsigned Flags = ELF::SHF_LINK_ORDER;
1349 StringRef GroupName;
1350 if (const MCSymbol *Group = ElfSec.getGroup()) {
1351 GroupName = Group->getName();
1352 Flags |= ELF::SHF_GROUP;
1353 }
1354 return Ctx->getELFSection(
1355 PseudoProbeSection->getName(), ELF::SHT_PROGBITS, Flags, 0, GroupName,
1356 true, ElfSec.getUniqueID(),
1357 static_cast<const MCSymbolELF *>(TextSec.getBeginSymbol()));
1358 } else if (ObjFileType == MCContext::IsCOFF) {
1359 StringRef COMDATSymName = "";
1360 int Selection = 0;
1361 unsigned Characteristics =
1362 static_cast<MCSectionCOFF *>(PseudoProbeSection)->getCharacteristics();
1363 const auto &COFFSec = static_cast<const MCSectionCOFF &>(TextSec);
1364 if (const MCSymbol *COMDATSym = COFFSec.getCOMDATSymbol()) {
1365 // Associate .pseudo_probe to its function section.
1366 COMDATSymName = COMDATSym->getName();
1367 Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
1368 Selection = COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
1369 }
1370 return Ctx->getCOFFSection(PseudoProbeSection->getName(), Characteristics,
1371 COMDATSymName, Selection, COFFSec.getUniqueID());
1372 }
1373
1374 return PseudoProbeSection;
1375}
1376
1377MCSection *
1378MCObjectFileInfo::getPseudoProbeDescSection(StringRef FuncName,
1379 uint64_t FuncHash) const {
1380 if (!Ctx->getTargetTriple().supportsCOMDAT() || FuncName.empty())
1381 return PseudoProbeDescSection;
1382
1383 // Create a separate comdat group for each function's descriptor in order
1384 // for the linker to deduplicate. The duplication, must be from different
1385 // translation unit, can come from:
1386 // 1. Inline functions defined in header files;
1387 // 2. ThinLTO imported functions;
1388 // 3. Weak-linkage definitions.
1389 // Use a concatenation of the section name, function name, and function hash
1390 // as the group name so that descriptors with different hashes (due to user
1391 // code not following ODR or compiler codegen inconsistencies) get separate
1392 // COMDAT sections instead of being silently dropped (ELF) or causing linker
1393 // errors (COFF). Duplicate GUIDs with mismatching hashes are detected
1394 // during descriptor decoding and reported by llvm-profgen.
1395 auto ObjFileType = Ctx->getObjectFileType();
1396 if (ObjFileType == MCContext::IsELF) {
1397 auto *S = static_cast<MCSectionELF *>(PseudoProbeDescSection);
1398 auto Flags = S->getFlags() | ELF::SHF_GROUP;
1399 return Ctx->getELFSection(
1400 S->getName(), S->getType(), Flags, S->getEntrySize(),
1401 S->getName() + "_" + FuncName + "." + Twine::utohexstr(FuncHash),
1402 /*IsComdat=*/true);
1403 } else if (ObjFileType == MCContext::IsCOFF) {
1404 auto *S = static_cast<MCSectionCOFF *>(PseudoProbeDescSection);
1405 unsigned Characteristics =
1406 S->getCharacteristics() | COFF::IMAGE_SCN_LNK_COMDAT;
1407 std::string COMDATSymName =
1408 (S->getName() + "_" + FuncName + "." + Twine::utohexstr(FuncHash))
1409 .str();
1410 return Ctx->getCOFFSection(S->getName(), Characteristics, COMDATSymName,
1411 COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH);
1412 }
1413
1414 return PseudoProbeDescSection;
1415}
1416
1420
1421MCSection *MCObjectFileInfo::getPCSection(StringRef Name,
1422 const MCSection *TextSec) const {
1423 if (Ctx->getObjectFileType() != MCContext::IsELF)
1424 return nullptr;
1425
1426 // SHF_WRITE for relocations, and let user post-process data in-place.
1427 unsigned Flags = ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_LINK_ORDER;
1428
1429 if (!TextSec)
1430 TextSec = getTextSection();
1431
1432 StringRef GroupName;
1433 const auto &ElfSec = static_cast<const MCSectionELF &>(*TextSec);
1434 if (const MCSymbol *Group = ElfSec.getGroup()) {
1435 GroupName = Group->getName();
1436 Flags |= ELF::SHF_GROUP;
1437 }
1438 return Ctx->getELFSection(
1439 Name, ELF::SHT_PROGBITS, Flags, 0, GroupName, true, ElfSec.getUniqueID(),
1440 static_cast<const MCSymbolELF *>(TextSec->getBeginSymbol()));
1441}
assert
assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")
Selection
amdgpu AMDGPU DAG DAG Pattern Instruction Selection
Definition AMDGPUISelDAGToDAG.cpp:160
useCompactUnwind
static bool useCompactUnwind(const Triple &T)
Definition MCObjectFileInfo.cpp:34
MCSectionGOFF.h
This file declares the MCSectionGOFF class, which contains all of the necessary machine code sections...
MCSymbolGOFF.h
This file contains the MCSymbolGOFF class.
T
#define T
Definition Mips16ISelLowering.cpp:282
PIC
PassInstrumentationCallbacks PIC
Definition PassBuilderBindings.cpp:57
SFrame.h
This file contains data-structure definitions and constants to support unwinding based on ....
StringExtras.h
This file contains some functions that are useful when dealing with strings.
llvm::MCContext
Context object for machine code objects.
Definition MCContext.h:83
llvm::MCContext::getOrCreateSymbol
LLVM_ABI MCSymbol * getOrCreateSymbol(const Twine &Name)
Lookup the symbol inside with the specified Name.
Definition MCContext.cpp:208
llvm::MCObjectFileInfo::NonLazySymbolPointerSection
MCSection * NonLazySymbolPointerSection
Definition MCObjectFileInfo.h:225
llvm::MCObjectFileInfo::TLSBSSSection
MCSection * TLSBSSSection
Section directive for Thread Local uninitialized data.
Definition MCObjectFileInfo.h:164
llvm::MCObjectFileInfo::CallGraphSection
MCSection * CallGraphSection
Section containing call graph metadata.
Definition MCObjectFileInfo.h:73
llvm::MCObjectFileInfo::DwarfDebugNamesSection
MCSection * DwarfDebugNamesSection
Accelerator table sections.
Definition MCObjectFileInfo.h:107
llvm::MCObjectFileInfo::TLSThreadInitSection
const MCSection * TLSThreadInitSection
Section for thread local data initialization functions.
Definition MCObjectFileInfo.h:210
llvm::MCObjectFileInfo::DwarfStrOffSection
MCSection * DwarfStrOffSection
The DWARF v5 string offset and address table sections.
Definition MCObjectFileInfo.h:125
llvm::MCObjectFileInfo::MergeableConst16Section
MCSection * MergeableConst16Section
Definition MCObjectFileInfo.h:197
llvm::MCObjectFileInfo::COFFGlobalTypeHashesSection
MCSection * COFFGlobalTypeHashesSection
Definition MCObjectFileInfo.h:150
llvm::MCObjectFileInfo::SFrameSection
MCSection * SFrameSection
SFrame section.
Definition MCObjectFileInfo.h:181
llvm::MCObjectFileInfo::DwarfGnuPubTypesSection
MCSection * DwarfGnuPubTypesSection
Section for newer gnu pubtypes.
Definition MCObjectFileInfo.h:143
llvm::MCObjectFileInfo::getLLVMStatsSection
MCSection * getLLVMStatsSection() const
Definition MCObjectFileInfo.cpp:1417
llvm::MCObjectFileInfo::TextSection
MCSection * TextSection
Section directive for standard text.
Definition MCObjectFileInfo.h:54
llvm::MCObjectFileInfo::TLSDataSection
MCSection * TLSDataSection
Section directive for Thread Local data. ELF, MachO, COFF, and Wasm.
Definition MCObjectFileInfo.h:159
llvm::MCObjectFileInfo::ThreadLocalPointerSection
MCSection * ThreadLocalPointerSection
Definition MCObjectFileInfo.h:226
llvm::MCObjectFileInfo::LSDASection
MCSection * LSDASection
If exception handling is supported by the target, this is the section the Language Specific Data Area...
Definition MCObjectFileInfo.h:70
llvm::MCObjectFileInfo::CompactUnwindSection
MCSection * CompactUnwindSection
If exception handling is supported by the target and the target can support a compact representation ...
Definition MCObjectFileInfo.h:78
llvm::MCObjectFileInfo::COFFDebugSymbolsSection
MCSection * COFFDebugSymbolsSection
Definition MCObjectFileInfo.h:148
llvm::MCObjectFileInfo::getPseudoProbeDescSection
MCSection * getPseudoProbeDescSection(StringRef FuncName, uint64_t FuncHash) const
Definition MCObjectFileInfo.cpp:1378
llvm::MCObjectFileInfo::DwarfLoclistsSection
MCSection * DwarfLoclistsSection
The DWARF v5 locations list section.
Definition MCObjectFileInfo.h:130
llvm::MCObjectFileInfo::PseudoProbeSection
MCSection * PseudoProbeSection
Section for pseudo probe information used by AutoFDO.
Definition MCObjectFileInfo.h:187
llvm::MCObjectFileInfo::FourByteConstantSection
MCSection * FourByteConstantSection
Definition MCObjectFileInfo.h:221
llvm::MCObjectFileInfo::getStackSizesSection
MCSection * getStackSizesSection(const MCSection &TextSec) const
Definition MCObjectFileInfo.cpp:1265
llvm::MCObjectFileInfo::DwarfRnglistsSection
MCSection * DwarfRnglistsSection
The DWARF v5 range list section.
Definition MCObjectFileInfo.h:128
llvm::MCObjectFileInfo::DwarfDebugInlineSection
const MCSection * DwarfDebugInlineSection
Definition MCObjectFileInfo.h:92
llvm::MCObjectFileInfo::getBBAddrMapSection
MCSection * getBBAddrMapSection(const MCSection &TextSec) const
Definition MCObjectFileInfo.cpp:1285
llvm::MCObjectFileInfo::LazySymbolPointerSection
MCSection * LazySymbolPointerSection
Definition MCObjectFileInfo.h:224
llvm::MCObjectFileInfo::RemarksSection
MCSection * RemarksSection
Remarks section.
Definition MCObjectFileInfo.h:173
llvm::MCObjectFileInfo::getPseudoProbeSection
MCSection * getPseudoProbeSection(const MCSection &TextSec) const
Definition MCObjectFileInfo.cpp:1344
llvm::MCObjectFileInfo::TLSExtraDataSection
MCSection * TLSExtraDataSection
Extra TLS Variable Data section.
Definition MCObjectFileInfo.h:156
llvm::MCObjectFileInfo::EHFrameSection
MCSection * EHFrameSection
EH frame section.
Definition MCObjectFileInfo.h:178
llvm::MCObjectFileInfo::OmitDwarfIfHaveCompactUnwind
bool OmitDwarfIfHaveCompactUnwind
OmitDwarfIfHaveCompactUnwind - True if the target object file supports having some functions with com...
Definition MCObjectFileInfo.h:39
llvm::MCObjectFileInfo::DrectveSection
MCSection * DrectveSection
COFF specific sections.
Definition MCObjectFileInfo.h:230
llvm::MCObjectFileInfo::FaultMapSection
MCSection * FaultMapSection
FaultMap section.
Definition MCObjectFileInfo.h:170
llvm::MCObjectFileInfo::getKCFITrapSection
MCSection * getKCFITrapSection(const MCSection &TextSec) const
Definition MCObjectFileInfo.cpp:1325
llvm::MCObjectFileInfo::TLSTLVSection
MCSection * TLSTLVSection
Section for thread local structure information.
Definition MCObjectFileInfo.h:206
llvm::MCObjectFileInfo::initMCObjectFileInfo
void initMCObjectFileInfo(MCContext &MCCtx, bool PIC, bool LargeCodeModel=false)
Definition MCObjectFileInfo.cpp:1172
llvm::MCObjectFileInfo::DwarfRnglistsDWOSection
MCSection * DwarfRnglistsDWOSection
The DWARF v5 range and location list sections for fission.
Definition MCObjectFileInfo.h:133
llvm::MCObjectFileInfo::ImportCallSection
MCSection * ImportCallSection
If import call optimization is supported by the target, this is the section to emit import call data ...
Definition MCObjectFileInfo.h:82
llvm::MCObjectFileInfo::MergeableConst32Section
MCSection * MergeableConst32Section
Definition MCObjectFileInfo.h:198
llvm::MCObjectFileInfo::SixteenByteConstantSection
MCSection * SixteenByteConstantSection
Definition MCObjectFileInfo.h:223
llvm::MCObjectFileInfo::getPCSection
MCSection * getPCSection(StringRef Name, const MCSection *TextSec) const
Definition MCObjectFileInfo.cpp:1421
llvm::MCObjectFileInfo::SFrameABIArch
std::optional< sframe::ABI > SFrameABIArch
SFrame ABI architecture byte.
Definition MCObjectFileInfo.h:51
llvm::MCObjectFileInfo::SupportsCompactUnwindWithoutEHFrame
bool SupportsCompactUnwindWithoutEHFrame
True if the target object file supports emitting a compact unwind section without an associated EH fr...
Definition MCObjectFileInfo.h:34
llvm::MCObjectFileInfo::ReadOnlySection
MCSection * ReadOnlySection
Section that is readonly and can contain arbitrary initialized data.
Definition MCObjectFileInfo.h:66
llvm::MCObjectFileInfo::FDECFIEncoding
unsigned FDECFIEncoding
FDE CFI encoding.
Definition MCObjectFileInfo.h:45
llvm::MCObjectFileInfo::DwarfLoclistsDWOSection
MCSection * DwarfLoclistsDWOSection
Definition MCObjectFileInfo.h:134
llvm::MCObjectFileInfo::getCallGraphSection
MCSection * getCallGraphSection(const MCSection &TextSec) const
Definition MCObjectFileInfo.cpp:1246
llvm::MCObjectFileInfo::BSSSection
MCSection * BSSSection
Section that is default initialized to zero.
Definition MCObjectFileInfo.h:60
llvm::MCObjectFileInfo::EightByteConstantSection
MCSection * EightByteConstantSection
Definition MCObjectFileInfo.h:222
llvm::MCObjectFileInfo::StackSizesSection
MCSection * StackSizesSection
Section containing metadata on function stack sizes.
Definition MCObjectFileInfo.h:184
llvm::MCObjectFileInfo::CompactUnwindDwarfEHFrameOnly
unsigned CompactUnwindDwarfEHFrameOnly
Compact unwind encoding indicating that we should emit only an EH frame.
Definition MCObjectFileInfo.h:48
llvm::MCObjectFileInfo::getTextSection
MCSection * getTextSection() const
Definition MCObjectFileInfo.h:274
llvm::MCObjectFileInfo::DwarfGnuPubNamesSection
MCSection * DwarfGnuPubNamesSection
Section for newer gnu pubnames.
Definition MCObjectFileInfo.h:141
llvm::MCObjectFileInfo::StackMapSection
MCSection * StackMapSection
StackMap section.
Definition MCObjectFileInfo.h:167
llvm::MCObjectFileInfo::getContext
MCContext & getContext() const
Definition MCObjectFileInfo.h:257
llvm::MCObjectFileInfo::DwarfAccelNamespaceSection
MCSection * DwarfAccelNamespaceSection
Definition MCObjectFileInfo.h:110
llvm::MCObjectFileInfo::DataSection
MCSection * DataSection
Section directive for standard data.
Definition MCObjectFileInfo.h:57
llvm::MCSectionCOFF
This represents a section on Windows.
Definition MCSectionCOFF.h:27
llvm::MCSectionELF
This represents a section on linux, lots of unix variants and some bare metal systems.
Definition MCSectionELF.h:27
llvm::MCSectionELF::getFlags
unsigned getFlags() const
Definition MCSectionELF.h:74
llvm::MCSectionELF::getUniqueID
unsigned getUniqueID() const
Definition MCSectionELF.h:81
llvm::MCSectionELF::getGroup
const MCSymbolELF * getGroup() const
Definition MCSectionELF.h:77
llvm::MCSectionXCOFF::setSymbolTableName
void setSymbolTableName(StringRef STN)
Definition MCSectionXCOFF.h:116
llvm::MCSectionXCOFF::getQualNameSymbol
MCSymbolXCOFF * getQualNameSymbol() const
Definition MCSectionXCOFF.h:113
llvm::MCSection
Instances of this class represent a uniqued identifier for a section in the current translation unit.
Definition MCSection.h:573
llvm::MCSection::setAlignment
void setAlignment(Align Value)
Definition MCSection.h:658
llvm::MCSection::NonUniqueID
static constexpr unsigned NonUniqueID
Definition MCSection.h:578
llvm::MCSection::setBeginSymbol
void setBeginSymbol(MCSymbol *Sym)
Definition MCSection.h:650
llvm::MCSection::getBeginSymbol
MCSymbol * getBeginSymbol()
Definition MCSection.h:646
llvm::MCSymbolXCOFF::setSymbolTableName
void setSymbolTableName(StringRef STN)
Definition MCSymbolXCOFF.h:63
llvm::MCSymbol
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition MCSymbol.h:42
llvm::SectionKind::getThreadData
static SectionKind getThreadData()
Definition SectionKind.h:207
llvm::SectionKind::getMetadata
static SectionKind getMetadata()
Definition SectionKind.h:188
llvm::SectionKind::getMergeable2ByteCString
static SectionKind getMergeable2ByteCString()
Definition SectionKind.h:196
llvm::SectionKind::getMergeableConst4
static SectionKind getMergeableConst4()
Definition SectionKind.h:202
llvm::SectionKind::getText
static SectionKind getText()
Definition SectionKind.h:190
llvm::SectionKind::getReadOnlyWithRel
static SectionKind getReadOnlyWithRel()
Definition SectionKind.h:214
llvm::SectionKind::getData
static SectionKind getData()
Definition SectionKind.h:213
llvm::SectionKind::getMergeableConst8
static SectionKind getMergeableConst8()
Definition SectionKind.h:203
llvm::SectionKind::getBSS
static SectionKind getBSS()
Definition SectionKind.h:209
llvm::SectionKind::getThreadBSS
static SectionKind getThreadBSS()
Definition SectionKind.h:206
llvm::SectionKind::getMergeableConst16
static SectionKind getMergeableConst16()
Definition SectionKind.h:204
llvm::SectionKind::getMergeable1ByteCString
static SectionKind getMergeable1ByteCString()
Definition SectionKind.h:193
llvm::SectionKind::getReadOnly
static SectionKind getReadOnly()
Definition SectionKind.h:192
llvm::StringLiteral
A wrapper around a string literal that serves as a proxy for constructing global tables of StringRefs...
Definition StringRef.h:888
llvm::StringRef
Represent a constant reference to a string, i.e.
Definition StringRef.h:56
llvm::StringRef::empty
constexpr bool empty() const
Check if the string is empty.
Definition StringRef.h:141
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition Triple.h:47
llvm::Triple::UnknownObjectFormat
@ UnknownObjectFormat
Definition Triple.h:418
llvm::Twine::utohexstr
static Twine utohexstr(uint64_t Val)
Definition Twine.h:385
uint64_t
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition ErrorHandling.h:164
llvm::AMDGPU::HSAMD::Kernel::Arg::Key::Align
constexpr char Align[]
Key for Kernel::Arg::Metadata::mAlign.
Definition AMDGPUMetadata.h:183
llvm::ARM_MB::LD
@ LD
Definition ARMBaseInfo.h:72
llvm::COFF::SectionCharacteristics
SectionCharacteristics
Definition COFF.h:298
llvm::COFF::IMAGE_SCN_LNK_REMOVE
@ IMAGE_SCN_LNK_REMOVE
Definition COFF.h:308
llvm::COFF::IMAGE_SCN_CNT_CODE
@ IMAGE_SCN_CNT_CODE
Definition COFF.h:303
llvm::COFF::IMAGE_SCN_MEM_READ
@ IMAGE_SCN_MEM_READ
Definition COFF.h:336
llvm::COFF::IMAGE_SCN_MEM_EXECUTE
@ IMAGE_SCN_MEM_EXECUTE
Definition COFF.h:335
llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA
@ IMAGE_SCN_CNT_UNINITIALIZED_DATA
Definition COFF.h:305
llvm::COFF::IMAGE_SCN_MEM_DISCARDABLE
@ IMAGE_SCN_MEM_DISCARDABLE
Definition COFF.h:331
llvm::COFF::IMAGE_SCN_LNK_INFO
@ IMAGE_SCN_LNK_INFO
Definition COFF.h:307
llvm::COFF::IMAGE_SCN_MEM_16BIT
@ IMAGE_SCN_MEM_16BIT
Definition COFF.h:312
llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA
@ IMAGE_SCN_CNT_INITIALIZED_DATA
Definition COFF.h:304
llvm::COFF::IMAGE_SCN_LNK_COMDAT
@ IMAGE_SCN_LNK_COMDAT
Definition COFF.h:309
llvm::COFF::IMAGE_SCN_MEM_WRITE
@ IMAGE_SCN_MEM_WRITE
Definition COFF.h:337
llvm::COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE
@ IMAGE_COMDAT_SELECT_ASSOCIATIVE
Definition COFF.h:459
llvm::COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH
@ IMAGE_COMDAT_SELECT_EXACT_MATCH
Definition COFF.h:458
llvm::ELF::SHF_MERGE
@ SHF_MERGE
Definition ELF.h:1262
llvm::ELF::SHF_STRINGS
@ SHF_STRINGS
Definition ELF.h:1265
llvm::ELF::SHF_EXCLUDE
@ SHF_EXCLUDE
Definition ELF.h:1290
llvm::ELF::SHF_ALLOC
@ SHF_ALLOC
Definition ELF.h:1256
llvm::ELF::SHF_LINK_ORDER
@ SHF_LINK_ORDER
Definition ELF.h:1271
llvm::ELF::SHF_GROUP
@ SHF_GROUP
Definition ELF.h:1278
llvm::ELF::SHF_X86_64_LARGE
@ SHF_X86_64_LARGE
Definition ELF.h:1319
llvm::ELF::SHF_WRITE
@ SHF_WRITE
Definition ELF.h:1253
llvm::ELF::SHF_TLS
@ SHF_TLS
Definition ELF.h:1281
llvm::ELF::SHF_EXECINSTR
@ SHF_EXECINSTR
Definition ELF.h:1259
llvm::ELF::SHT_PROGBITS
@ SHT_PROGBITS
Definition ELF.h:1155
llvm::ELF::SHT_NOBITS
@ SHT_NOBITS
Definition ELF.h:1162
llvm::ELF::SHT_LLVM_CALL_GRAPH
@ SHT_LLVM_CALL_GRAPH
Definition ELF.h:1198
llvm::ELF::SHT_MIPS_DWARF
@ SHT_MIPS_DWARF
Definition ELF.h:1234
llvm::ELF::SHT_LLVM_BB_ADDR_MAP
@ SHT_LLVM_BB_ADDR_MAP
Definition ELF.h:1193
llvm::ELF::SHT_GNU_SFRAME
@ SHT_GNU_SFRAME
Definition ELF.h:1202
llvm::ELF::SHT_X86_64_UNWIND
@ SHT_X86_64_UNWIND
Definition ELF.h:1230
llvm::GOFF::ESD_LB_Deferred
@ ESD_LB_Deferred
Definition GOFF.h:129
llvm::GOFF::ESD_LB_NoLoad
@ ESD_LB_NoLoad
Definition GOFF.h:130
llvm::GOFF::ESD_LB_Initial
@ ESD_LB_Initial
Definition GOFF.h:128
llvm::GOFF::CLASS_WSA
constexpr StringLiteral CLASS_WSA
Definition MCGOFFAttributes.h:94
llvm::GOFF::ESD_BA_Concatenate
@ ESD_BA_Concatenate
Definition GOFF.h:98
llvm::GOFF::ESD_BA_Merge
@ ESD_BA_Merge
Definition GOFF.h:99
llvm::GOFF::ESD_TS_Structured
@ ESD_TS_Structured
Definition GOFF.h:93
llvm::GOFF::ESD_TS_ByteOriented
@ ESD_TS_ByteOriented
Definition GOFF.h:92
llvm::GOFF::ESD_EXE_DATA
@ ESD_EXE_DATA
Definition GOFF.h:111
llvm::GOFF::ESD_RQ_1
@ ESD_RQ_1
Definition GOFF.h:70
llvm::GOFF::ESD_RQ_0
@ ESD_RQ_0
Definition GOFF.h:69
llvm::GOFF::CLASS_PPA2
constexpr StringLiteral CLASS_PPA2
Definition MCGOFFAttributes.h:96
llvm::GOFF::ESD_BSC_Section
@ ESD_BSC_Section
Definition GOFF.h:136
llvm::GOFF::ESD_LT_OS
@ ESD_LT_OS
Definition GOFF.h:142
llvm::GOFF::ESD_LT_XPLink
@ ESD_LT_XPLink
Definition GOFF.h:142
llvm::GOFF::ESD_NS_Parts
@ ESD_NS_Parts
Definition GOFF.h:65
llvm::GOFF::ESD_NS_NormalName
@ ESD_NS_NormalName
Definition GOFF.h:63
llvm::GOFF::ESD_TA_Rent
@ ESD_TA_Rent
Definition GOFF.h:106
llvm::GOFF::CLASS_CODE
constexpr StringLiteral CLASS_CODE
Definition MCGOFFAttributes.h:93
llvm::GOFF::ESD_RMODE_64
@ ESD_RMODE_64
Definition GOFF.h:88
llvm::MachO::S_THREAD_LOCAL_VARIABLE_POINTERS
@ S_THREAD_LOCAL_VARIABLE_POINTERS
S_THREAD_LOCAL_VARIABLE_POINTERS - Section with pointers to thread local structures.
Definition MachO.h:175
llvm::MachO::S_16BYTE_LITERALS
@ S_16BYTE_LITERALS
S_16BYTE_LITERALS - Section with only 16 byte literals.
Definition MachO.h:160
llvm::MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
@ S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local variable initialization pointers to...
Definition MachO.h:178
llvm::MachO::S_COALESCED
@ S_COALESCED
S_COALESCED - Section contains symbols that are to be coalesced.
Definition MachO.h:152
llvm::MachO::S_THREAD_LOCAL_ZEROFILL
@ S_THREAD_LOCAL_ZEROFILL
S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
Definition MachO.h:169
llvm::MachO::S_LAZY_SYMBOL_POINTERS
@ S_LAZY_SYMBOL_POINTERS
S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
Definition MachO.h:141
llvm::MachO::S_CSTRING_LITERALS
@ S_CSTRING_LITERALS
S_CSTRING_LITERALS - Section with literal C strings.
Definition MachO.h:131
llvm::MachO::S_THREAD_LOCAL_REGULAR
@ S_THREAD_LOCAL_REGULAR
S_THREAD_LOCAL_REGULAR - Thread local data section.
Definition MachO.h:167
llvm::MachO::S_ZEROFILL
@ S_ZEROFILL
S_ZEROFILL - Zero fill on demand section.
Definition MachO.h:129
llvm::MachO::S_NON_LAZY_SYMBOL_POINTERS
@ S_NON_LAZY_SYMBOL_POINTERS
S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
Definition MachO.h:139
llvm::MachO::S_4BYTE_LITERALS
@ S_4BYTE_LITERALS
S_4BYTE_LITERALS - Section with 4 byte literals.
Definition MachO.h:133
llvm::MachO::S_8BYTE_LITERALS
@ S_8BYTE_LITERALS
S_8BYTE_LITERALS - Section with 8 byte literals.
Definition MachO.h:135
llvm::MachO::S_THREAD_LOCAL_VARIABLES
@ S_THREAD_LOCAL_VARIABLES
S_THREAD_LOCAL_VARIABLES - Section with thread local variable structure data.
Definition MachO.h:172
llvm::MachO::S_ATTR_DEBUG
@ S_ATTR_DEBUG
S_ATTR_DEBUG - A debug section.
Definition MachO.h:207
llvm::MachO::S_ATTR_NO_DEAD_STRIP
@ S_ATTR_NO_DEAD_STRIP
S_ATTR_NO_DEAD_STRIP - No dead stripping.
Definition MachO.h:200
llvm::MachO::S_ATTR_NO_TOC
@ S_ATTR_NO_TOC
S_ATTR_NO_TOC - Section contains coalesced symbols that are not to be in a ranlib table of contents.
Definition MachO.h:195
llvm::MachO::S_ATTR_LIVE_SUPPORT
@ S_ATTR_LIVE_SUPPORT
S_ATTR_LIVE_SUPPORT - Blocks are live if they reference live blocks.
Definition MachO.h:202
llvm::MachO::S_ATTR_PURE_INSTRUCTIONS
@ S_ATTR_PURE_INSTRUCTIONS
S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine instructions.
Definition MachO.h:192
llvm::MachO::S_ATTR_STRIP_STATIC_SYMS
@ S_ATTR_STRIP_STATIC_SYMS
S_ATTR_STRIP_STATIC_SYMS - Ok to strip static symbols in this section in files with the MY_DYLDLINK f...
Definition MachO.h:198
llvm::XCOFF::SSUBTYP_DWARNGE
@ SSUBTYP_DWARNGE
DWARF aranges section.
Definition XCOFF.h:160
llvm::XCOFF::SSUBTYP_DWFRAME
@ SSUBTYP_DWFRAME
DWARF frame section.
Definition XCOFF.h:165
llvm::XCOFF::SSUBTYP_DWABREV
@ SSUBTYP_DWABREV
DWARF abbrev section.
Definition XCOFF.h:161
llvm::XCOFF::SSUBTYP_DWINFO
@ SSUBTYP_DWINFO
DWARF info section.
Definition XCOFF.h:156
llvm::XCOFF::SSUBTYP_DWRNGES
@ SSUBTYP_DWRNGES
DWARF ranges section.
Definition XCOFF.h:163
llvm::XCOFF::SSUBTYP_DWLOC
@ SSUBTYP_DWLOC
DWARF loc section.
Definition XCOFF.h:164
llvm::XCOFF::SSUBTYP_DWMAC
@ SSUBTYP_DWMAC
DWARF macinfo section.
Definition XCOFF.h:166
llvm::XCOFF::SSUBTYP_DWPBNMS
@ SSUBTYP_DWPBNMS
DWARF pubnames section.
Definition XCOFF.h:158
llvm::XCOFF::SSUBTYP_DWPBTYP
@ SSUBTYP_DWPBTYP
DWARF pubtypes section.
Definition XCOFF.h:159
llvm::XCOFF::SSUBTYP_DWLINE
@ SSUBTYP_DWLINE
DWARF line section.
Definition XCOFF.h:157
llvm::XCOFF::SSUBTYP_DWSTR
@ SSUBTYP_DWSTR
DWARF str section.
Definition XCOFF.h:162
llvm::XCOFF::XMC_TC0
@ XMC_TC0
TOC Anchor for TOC Addressability.
Definition XCOFF.h:119
llvm::XCOFF::XMC_RW
@ XMC_RW
Read Write Data.
Definition XCOFF.h:118
llvm::XCOFF::XMC_TL
@ XMC_TL
Initialized thread-local variable.
Definition XCOFF.h:127
llvm::XCOFF::XMC_RO
@ XMC_RO
Read Only Constant.
Definition XCOFF.h:107
llvm::XCOFF::XMC_PR
@ XMC_PR
Program Code.
Definition XCOFF.h:106
llvm::XCOFF::XTY_SD
@ XTY_SD
Csect definition for initialized storage.
Definition XCOFF.h:243
llvm::dwarf::DW_EH_PE_pcrel
@ DW_EH_PE_pcrel
Definition Dwarf.h:885
llvm::dwarf::DW_EH_PE_sdata4
@ DW_EH_PE_sdata4
Definition Dwarf.h:882
llvm::dwarf::DW_EH_PE_sdata8
@ DW_EH_PE_sdata8
Definition Dwarf.h:883
llvm::dwarf::DW_EH_PE_absptr
@ DW_EH_PE_absptr
Definition Dwarf.h:874
llvm::wasm::WASM_SEG_FLAG_STRINGS
@ WASM_SEG_FLAG_STRINGS
Definition Wasm.h:238
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition FunctionInfo.h:25
llvm::utostr
std::string utostr(uint64_t X, bool isNeg=false)
Definition StringExtras.h:322
llvm::FuncHash
FuncHash
Definition InstrProf.h:78
llvm::report_fatal_error
LLVM_ABI void report_fatal_error(Error Err, bool gen_crash_diag=true)
Definition Error.cpp:163
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